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Symbiofilm Trial in Allergic Kids (SYMBIOFILM-TAK)

Impact of Adding Healsea® Isotonic Nasal Spray to Conventional Therapies for the Care of Children With Allergic Rhinitis Presenting With Symptoms of Acute Infectious Rhinitis: an Observational Study

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05034328
Enrollment
186
Registered
2021-09-05
Start date
2022-02-14
Completion date
2022-11-03
Last updated
2025-01-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Allergy, Common Cold

Keywords

Infectious rhinitis, nasal irrigation, perennial allergy

Brief summary

Healsea® Children is a seawater-based nasal spray supplemented with a natural Symbiofilm® extract (0.02%) isolated from marine bacteria. Symbiofilm has antibiofilm activity against various bacterial pathogens involved in respiratory tract infections.Healsea® Children is indicated in the cleaning and moistening of nasal mucosa during common cold and rhinitis for children above 6 years. This non interventional post-market clinical investigation aimed to confirm the benefit of Healsea® Children in real life setting in children with perennial allergy who are more prone to common cold.

Detailed description

Healsea® Children is a seawater-based nasal spray supplemented with a natural Symbiofilm® extract (0.02%) isolated from marine bacteria. Symbiofilm® is an exopolymeric composition with emulsifying properties, in vitro antibiofilm activity and detachment properties against various bacterial pathogens involved in respiratory tract infections. Symbiofilm® has no bacteriostatic nor bactericidal activities. Healsea® Children is indicated in the cleaning and moistening of nasal mucosa during common cold and rhinitis. The common cold is an acute viral infection of the upper respiratory tract, involving, to variable degrees, sneezing, nasal congestion and discharge (rhinorrhea), sore throat, cough, low-grade fever, headache, and malaise (1). It can be caused by members of several families of viruses; the most common are rhinoviruses. Acute viral rhinitis is generally self-limiting. In children where the illness is not self-limiting and extends beyond 7-10 days, many agree that a bacterial infection is likely (1). Bacterial over infections and progression to a chronic state are favoured by the formation of biofilms, which facilitate bacterial growth and persistence as well as reducing antibiotic efficacy (2-3). Allergic diseases may play a particular role in promoting the respiratory infection recurrences (4). The physiological immune response is impaired in allergic subjects and allergic inflammation favours predisposition to respiratory infections. Subjects with allergic disorders may have functional defect of type 1 immune response that is relevant in fighting infections (5-6). Allergic rhinitis (AR) may affect up to 40% of the paediatric population. Nasal symptoms are caused by exposure to an allergen to which a patient is sensitized. AR is characterized by typical nasal symptoms and immunoglobulin E (IgE) -mediated inflammation. The allergic inflammatory process releases many cytokines and other proinflammatory proteins. Inflammation caused by nasal allergy leads to obstruction, fluid accumulation and acute disease. If these diseases are unsuccessfully treated, a chronic state of inflammation, obstruction, and infection develops that can cause mucosal damage and, ultimately, chronic disease (7). For these reasons, the paediatric IgE-dependent allergic population that is more prone to common cold represents a suitable target for Healsea® Children (8-9). During this prospective post-market clinical investigation, IgE-dependent allergic children with early symptoms of infectious rhinitis will be followed, children being treated with Healsea® Children on top of common cold conventional therapies or with conventional therapies only (excluded nasal irrigation). Conventional therapies for non-complicated infectious rhinitis are symptomatic but are not without side effects. For example, decongestant use can increase blood pressure, antihistamine intake is associated with drowsiness. Healsea® Children represents an interesting alternative that can not only improve acute infectious rhinitis symptomatology but could also limit the complication and progression to chronic state. This non interventional post-market clinical investigation aimed to confirm the benefit of Healsea® Children in a real life setting in children with perennial allergy.

Interventions

DEVICEHealsea® Children

Children will be administered Healsea Children , one puff (1-2 sec) in each nostril twice a day for 10 days on top of conventional therapies, as needed

OTHERConventional therapies for common cold

Children will receive conventional therapies for common cold, nasal irrigation excluded (antipyretics, mucolytics, decongestants, antitussives, systemic and topical corticosteroids, antibiotics)

Sponsors

Lallemand Pharma AG
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
6 Years to 10 Years
Healthy volunteers
No

Inclusion criteria

1. Male/Female subjects ≥6 and ≤10-year-old 2. AsIgE (Allergy specific IgE) ≥ class 2 (RAST) or positive prick test for at least one perennial allergen 3. Acute infectious rhinitis/rhinosinusitis for ≤48h before trial entry 4. Patient presenting with fever ≥ 37.5 °C at screening 5. Symptoms of headache, muscle ache, chilliness, sore throat, blocked nose, runny nose, cough, sneezing with a total score ≤9 (according to a physician-rated symptom score; scale: 0 to 3 \[0: no symptom to 3: severe intensity\]) 6. At least one of these symptoms: sore throat, runny nose or blocked nose (i.e., with a score ≥1) 7. Written consent obtained from parent/legal guardians 8. Written assent obtained from patient

Exclusion criteria

1. Known hypersensitivity/allergy to any component of the test device 2. Medical history that is considered by the investigator as a reason for non-inclusion, 3. Severe nasal septum deviation or other condition that could cause nasal obstruction such as the presence of nasal polyps 4. History of nasal or sinus surgery that in the opinion of the investigator may influence symptom scores 5. Antibiotic intake within 2 weeks before screening 6. Systemic corticosteroids within 4 weeks before screening 7. Antihistamines intake for allergy when treatment was started from less than 4 weeks 8. Bacterial lysate intake within 6 months before screening 9. Chronic decongestant use 10. Recent (within the previous 2 days) intake of a common cold medicine that in the opinion of the investigator may influence symptom score at screening (NSAID, nasal decongestants, cough medicines)

Design outcomes

Primary

MeasureTime frameDescription
AUC (Area Under Curve) of the Wisconsin Upper Respiratory Symptoms Survey for Kids (WURSS-K) During the 10-day Treatment PeriodCumulative AUC of the WURSS score assessed from Day 1 to Day 10The WURSS-K will be assessed once daily, from Day1 to Day10 (treatment period) WURSS-K is a 3-dimensional structure questionnaire specifically designed for children 4 to 10 years of age. It includes 6 items assessing symptoms (symptoms score: runny nose, stuffy nose, sneezing, sore throat, cough, feeling tired), 7 items assessing functional impairments (quality of life score: think, sleep, breathe, talk, walk/climb stairs/exercise, go to school, play with friends), 1 item assessing global severity. All these items are scored from 0 (absent or no impairment) through 1 (a little bad), 2 (bad) and 3 (very bad). The AUC value of the WURSS-K during the 10 day- treatment period is comprised between 0 WURSS-K score\*day (no impairement) and 420 WURSS-K score \*day (maximal impairement)

Secondary

MeasureTime frameDescription
Number of Days With Stuffy NoseNumber of days with stuffy nose during the 10-day treatment period and a follow-up period of 20 days, up to 30 daysDuring the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Stuffy nose is the item 3.
Number of Days With SneezingNumber of days with sneezing during the 10-day treatment period and a follow-up of 20 days, up to 30 daysDuring the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of common cold symptoms in both groups. Sneezing is the item 4.
Number of Days With Sore ThroatNumber of days with sore throat during the 10-day treatment period and a follow-up of 20 days, up to 30 daysDuring the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Sore throat is the item 5.
Number of Days With Runny NoseNumber of days with runny nose during the 10-day treatment period and a follow-up of 20 days, up to 30 daysDuring the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Runny nose is the item 2
Number of Days With Feeling TiredNumber of days with feeling tired during the 10-day treatment period and a follow-up of 20 days, up to 30 daysDuring the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Feeling tired is the item 7.
Respiratory Complication Requiring Antibiotic Prescription After the10-day Treatment PeriodNumber of subjects with respiratory complications during the 20-day follow-up periodThe number of subjects who develop respiratory complication requiring antibiotic prescription during a 20-day follow-up period after the treatment period will be assessed in both groups and compared
Number of Participants With Use of Concomitant TreatmentsDuring 10-day treatment period and a follow-up period of 20 days, up to 30 daysNumber of subjects who took at least one concomitant treatment (antibiotics, antipyretics, systemic or local mucolytics, decongestants, antitussives, systemic and topical corticosteroids) that may impact symptoms of common cold and comparaison between groups
Number of Days With CoughNumber of days with cough during the 10-day treatment period and a follow-up of 20 days, up to 30 daysDuring the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Cough is the item 6.

Countries

Poland

Participant flow

Recruitment details

Participants were outpatients visiting a physician in Polish hospitals or private practices at the onset of a common cold. The first patient was screened and enrolled on 14th of February 2022 and the last patient on 20th October 2022.

Participants by arm

ArmCount
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® Extract
Children will receive Healsea® Children nasal spray on top of conventional therapies for common cold, as needed. Healsea® Children: Children will be administered Healsea Children , one puff (1-2 sec) in each nostril twice a day for 10 days on top of conventional therapies, as needed Conventional therapies for common cold: Children will receive conventional therapies for common cold, nasal irrigation excluded (antipyretics, mucolytics, decongestants, antitussives, systemic and topical corticosteroids, antibiotics)
101
Conventional Therapies
Children will receive conventional therapies for common cold as needed, nasal irrigation excluded Conventional therapies for common cold: Children will receive conventional therapies for common cold, nasal irrigation excluded (antipyretics, mucolytics, decongestants, antitussives, systemic and topical corticosteroids, antibiotics)
85
Total186

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up010
Overall StudyProtocol Violation10

Baseline characteristics

CharacteristicConventional TherapiesTotalHealsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® Extract
Age, Continuous8.02 Years
STANDARD_DEVIATION 1.4
7.93 Years
STANDARD_DEVIATION 1.41
7.86 Years
STANDARD_DEVIATION 1.42
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
85 Participants186 Participants101 Participants
Race (NIH/OMB)
White
0 Participants0 Participants0 Participants
Region of Enrollment
Poland
85 participants186 participants101 participants
Sex: Female, Male
Female
36 Participants81 Participants45 Participants
Sex: Female, Male
Male
49 Participants105 Participants56 Participants
Symptoms of acute rhinitis at baseline
Blocked nose
1.6 units on a scale
STANDARD_DEVIATION 0.8
1.7 units on a scale
STANDARD_DEVIATION 0.7
1.7 units on a scale
STANDARD_DEVIATION 0.7
Symptoms of acute rhinitis at baseline
Chiliness
0.3 units on a scale
STANDARD_DEVIATION 0.5
0.2 units on a scale
STANDARD_DEVIATION 0.5
0.2 units on a scale
STANDARD_DEVIATION 0.4
Symptoms of acute rhinitis at baseline
Cough
1.1 units on a scale
STANDARD_DEVIATION 1
1.0 units on a scale
STANDARD_DEVIATION 0.9
0.9 units on a scale
STANDARD_DEVIATION 0.8
Symptoms of acute rhinitis at baseline
Headache
0.5 units on a scale
STANDARD_DEVIATION 0.6
0.6 units on a scale
STANDARD_DEVIATION 0.6
0.6 units on a scale
STANDARD_DEVIATION 0.6
Symptoms of acute rhinitis at baseline
Muscle ache
0.2 units on a scale
STANDARD_DEVIATION 0.5
0.2 units on a scale
STANDARD_DEVIATION 0.4
0.1 units on a scale
STANDARD_DEVIATION 0.4
Symptoms of acute rhinitis at baseline
Runny nose
1.5 units on a scale
STANDARD_DEVIATION 0.7
1.5 units on a scale
STANDARD_DEVIATION 0.7
1.5 units on a scale
STANDARD_DEVIATION 0.7
Symptoms of acute rhinitis at baseline
Sneezing
0.9 units on a scale
STANDARD_DEVIATION 0.7
1.0 units on a scale
STANDARD_DEVIATION 0.7
1.0 units on a scale
STANDARD_DEVIATION 0.7
Symptoms of acute rhinitis at baseline
Sore throat
0.8 units on a scale
STANDARD_DEVIATION 0.7
0.8 units on a scale
STANDARD_DEVIATION 0.7
0.8 units on a scale
STANDARD_DEVIATION 0.7
Symptoms of acute rhinitis at baseline: temperature37.81 Degrees Celcius
STANDARD_DEVIATION 0.39
37.78 Degrees Celcius
STANDARD_DEVIATION 0.31
37.75 Degrees Celcius
STANDARD_DEVIATION 0.23

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 1010 / 85
other
Total, other adverse events
17 / 10123 / 85
serious
Total, serious adverse events
0 / 1010 / 85

Outcome results

Primary

AUC (Area Under Curve) of the Wisconsin Upper Respiratory Symptoms Survey for Kids (WURSS-K) During the 10-day Treatment Period

The WURSS-K will be assessed once daily, from Day1 to Day10 (treatment period) WURSS-K is a 3-dimensional structure questionnaire specifically designed for children 4 to 10 years of age. It includes 6 items assessing symptoms (symptoms score: runny nose, stuffy nose, sneezing, sore throat, cough, feeling tired), 7 items assessing functional impairments (quality of life score: think, sleep, breathe, talk, walk/climb stairs/exercise, go to school, play with friends), 1 item assessing global severity. All these items are scored from 0 (absent or no impairment) through 1 (a little bad), 2 (bad) and 3 (very bad). The AUC value of the WURSS-K during the 10 day- treatment period is comprised between 0 WURSS-K score\*day (no impairement) and 420 WURSS-K score \*day (maximal impairement)

Time frame: Cumulative AUC of the WURSS score assessed from Day 1 to Day 10

Population: All included subjects who used the investigational medical device at least once and with non-missing value at Day1 and at least another non-missing time point between Day2 and Day10. Otherwise, the AUC was missing.

ArmMeasureValue (MEAN)Dispersion
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® ExtractAUC (Area Under Curve) of the Wisconsin Upper Respiratory Symptoms Survey for Kids (WURSS-K) During the 10-day Treatment Period36.56 scores on WURSS-K scale* daysStandard Deviation 21.14
Conventional TherapiesAUC (Area Under Curve) of the Wisconsin Upper Respiratory Symptoms Survey for Kids (WURSS-K) During the 10-day Treatment Period55.54 scores on WURSS-K scale* daysStandard Deviation 27.86
p-value: <0.05Wilcoxon (Mann-Whitney)
Secondary

Number of Days With Cough

During the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Cough is the item 6.

Time frame: Number of days with cough during the 10-day treatment period and a follow-up of 20 days, up to 30 days

Population: FAS

ArmMeasureValue (MEAN)Dispersion
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® ExtractNumber of Days With Cough6.1 DayStandard Error 6.2
Conventional TherapiesNumber of Days With Cough7.1 DayStandard Error 7.2
Comparison: For each item 2 to 7 of the WURSS-K questionnaire, the impact of the treatment chosen on the corresponding common cold symptom duration was analyzed by means of Cox model and p-value (Wald) calculatedp-value: 0.395495% CI: [0.83, 1.601]Regression, Cox
Secondary

Number of Days With Feeling Tired

During the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Feeling tired is the item 7.

Time frame: Number of days with feeling tired during the 10-day treatment period and a follow-up of 20 days, up to 30 days

Population: FAS

ArmMeasureValue (MEAN)Dispersion
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® ExtractNumber of Days With Feeling Tired4.8 DayStandard Error 6.2
Conventional TherapiesNumber of Days With Feeling Tired6.4 DayStandard Error 7.3
Comparison: For each item 2 to 7 of the WURSS-K questionnaire, the impact of the treatment chosen on the corresponding common cold symptom duration was analyzed by means of Cox model and p-value (Wald) calculatedp-value: 1.21895% CI: [0.871, 1.703]Regression, Cox
Secondary

Number of Days With Runny Nose

During the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Runny nose is the item 2

Time frame: Number of days with runny nose during the 10-day treatment period and a follow-up of 20 days, up to 30 days

Population: All included subjects who used the investigational medical device at least once

ArmMeasureValue (MEAN)Dispersion
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® ExtractNumber of Days With Runny Nose7.4 DayStandard Error 6.9
Conventional TherapiesNumber of Days With Runny Nose9.4 DayStandard Error 7.9
Comparison: For each item 2 to 7 of the WURSS-K questionnaire, the impact of the treament chosen on the corresponding common cold symptom duration was analyzed by means of Cox model and p-value (Wald) calculatedp-value: 0.702695% CI: [0.778, 1.451]Regression, Cox
Secondary

Number of Days With Sneezing

During the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of common cold symptoms in both groups. Sneezing is the item 4.

Time frame: Number of days with sneezing during the 10-day treatment period and a follow-up of 20 days, up to 30 days

Population: FAS

ArmMeasureValue (MEAN)Dispersion
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® ExtractNumber of Days With Sneezing6.1 DayStandard Error 6.5
Conventional TherapiesNumber of Days With Sneezing5.9 DayStandard Error 6
Comparison: For each item 2 to 7 of the WURSS-K questionnaire, the impact of the treatment chosen on the corresponding common cold symptom duration was analyzed by means of Cox model and p-value (Wald) calculatedp-value: 0.959895% CI: [0.726, 1.356]Regression, Cox
Secondary

Number of Days With Sore Throat

During the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Sore throat is the item 5.

Time frame: Number of days with sore throat during the 10-day treatment period and a follow-up of 20 days, up to 30 days

Population: FAS

ArmMeasureValue (MEAN)Dispersion
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® ExtractNumber of Days With Sore Throat3.9 DayStandard Error 5.6
Conventional TherapiesNumber of Days With Sore Throat5.2 DayStandard Error 6.9
Comparison: For each item 2 to 7 of the WURSS-K questionnaire, the impact of the treatment chosen on the corresponding common cold symptom duration was analyzed by means of Cox model and p-value (Wald) calculatedp-value: 0.101695% CI: [0.945, 1.88]Regression, Cox
Secondary

Number of Days With Stuffy Nose

During the treatment period, the WURSS-K will be assessed once daily. After D10, the WURSS-K will be assessed once daily until the subject feels not sick for two consecutive days. Items 2 to 7 will be used to assess the duration of each common cold symptoms in both groups. Stuffy nose is the item 3.

Time frame: Number of days with stuffy nose during the 10-day treatment period and a follow-up period of 20 days, up to 30 days

Population: FAS

ArmMeasureValue (MEAN)Dispersion
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® ExtractNumber of Days With Stuffy Nose6.8 DayStandard Error 6.3
Conventional TherapiesNumber of Days With Stuffy Nose8.6 DayStandard Error 7.5
Comparison: For each item 2 to 7 of the WURSS-K questionnaire, the impact of the treatment chosen on the corresponding common cold symptom duration was analyzed by means of Cox model and p-value (Wald) calculatedp-value: 0.632295% CI: [0.792, 1.469]Regression, Cox
Secondary

Number of Participants With Use of Concomitant Treatments

Number of subjects who took at least one concomitant treatment (antibiotics, antipyretics, systemic or local mucolytics, decongestants, antitussives, systemic and topical corticosteroids) that may impact symptoms of common cold and comparaison between groups

Time frame: During 10-day treatment period and a follow-up period of 20 days, up to 30 days

ArmMeasureValue (NUMBER)
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® ExtractNumber of Participants With Use of Concomitant Treatments53 participants
Conventional TherapiesNumber of Participants With Use of Concomitant Treatments66 participants
p-value: 0.00195% CI: [0.174, 0.644]Regression, Logistic
Secondary

Respiratory Complication Requiring Antibiotic Prescription After the10-day Treatment Period

The number of subjects who develop respiratory complication requiring antibiotic prescription during a 20-day follow-up period after the treatment period will be assessed in both groups and compared

Time frame: Number of subjects with respiratory complications during the 20-day follow-up period

Population: FAS

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Healsea® Children: Isotonic Seawater Based Nasal Spray Supplemented With Natural Symbiofilm® ExtractRespiratory Complication Requiring Antibiotic Prescription After the10-day Treatment Period1 Participants
Conventional TherapiesRespiratory Complication Requiring Antibiotic Prescription After the10-day Treatment Period2 Participants
Comparison: The impact of the treatment chosen on the risk to develop respiratory complication requiring antibiotic prescription during a 20-day follow-up was analyzed by a multivariate logistic modelp-value: >0.05Regression, Logistic

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026